Omega Pre-owned Speedmaster 3366.51 Wristwatch — a limited-edition sport chronograph in two-tone 18K pink gold and stainless steel. Condition: Excellent — listed as Used (very good); Rank A Used with a few traces of usage (insignificant scratches), recently polished; no accessories included. Key attributes: Black | 18K pink gold, stainless steel | Manual-winding mechanical movement | Polished maintenance (recent) | Chronograph function | Manual winding movement | Limited edition: 1731/1971 | Serial number: 77**7056 | Black dial | 42mm case diameter | Two-tone case: 18K pink gold and stainless steel | Stainless steel bracelet | Sport style | Dimensions & fit: Fits wrist size: 19cm / 7.48'' | Case diameter: 42mm | Composition & care: 18K pink gold (case) | Stainless steel (case and bracelet) | Clean with a soft cloth; avoid prolonged exposure to water; have serviced by a professional watchmaker regularly.